Hooked up server to suicide if clock offset is too great

Disable offset checking if the maxOffset is set to 0

Rename all instances of Drift to Offset

Note that I switched to Marzullo's algorithm from the intersection algorithm, which still works I can still test that the interval was defined by a majority of clocks.
Instead of keeping maxOffset as a separate variable, why not just access it via r.clock.MaxOffset()?